The distance between exits on Interstate 40 depends on the location of the exits and the amount of development surrounding them. Many exits are located no more than 3 miles apart, but longer gaps exist in rural areas. The longest gap occurs between exits 50 and 78 in California.
The third longest interstate system in the United States, Interstate 40 connects the east coast and west coast and takes drivers on a 2,547 mile journey through eight states. The exits are numbered based on their mile-marker position rather than consecutively, so it's easier for drivers to estimate the distance of the next exit.